14

AmMCL00XA

PR EL IMIN A R Y

Table 6.

Even Byte Command Definitions

Note for Table 6: During even (low) byte accesses, CEL# = 0, CEH# = 1. Address is applied to Memory Device 0 (S0). On 4 Mbyte

cards, address for Memory Device 2 (S2) = (Addr) + 200000h.

Table 7.

Odd Byte Command Definitions

Note for Table 7: During odd (high) byte accesses, CEL#= 1, CEH# = 0, and address is applied to Memory Device 1 (S1). On 4 Mbyte

cards, address for Memory Device 3 (S3) = (Addr) + 200000h + 100000h.

Legend for Tables 6 and 7:

X = Don’t care

RA = Address of the memory location to be read.

RW = Data read from location RA during read operation.

PA = Address of the memory location to be programmed.

Addresses are latched on the falling edge of the WE# pulse.

PW = Data to be programmed at location PA. Data is latched on

the rising edge of WE#.

SA = Address of the sector to be erased. Refer to Table 8 for

sector addresses.

Notes for Tables 6 and 7:

1. Write protect must not be enabled for proper operation of all

commands. No command required for reading array data,

and can thus be done with write protect enabled.

2. For host-to-card address bit connections, see Figure 2.

3. All values are in hexadecimal.

4. The last bus cycle in an autoselect command sequence is a

read operation.

5. Address bits = X = Don’t Care for all commands except for

Read Address (RA), Program Address (PA), and Sector

Address (SA).

6. The Erase Suspend command is valid only during a sector

erase operation. Refer to “Sector Erase Suspend”.

7. The Erase Resume command is valid only during the Erase

Suspend mode.

8. See Table 4 for bus operations.

Embedded Command Sequence

(Note 1)

Bus Cycles (Notes 2–8)

First

Second

Third

Fourth

Fifth

Sixth

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Read

1

RA

RD

Reset

1

XXXX XXF0

Autoselect Manufacturer ID (Note 4)

4

XXXX

XXAA

XXXX

XX55

XXXX

XX90

XX00

XX01

Device ID (Note 4)

4

XXXX

XXAA

XXXX

XX55

XXXX

XX90

XX01

XX38

Byte Write

4

XXXX

XXAA

XXXX

XX55

XXXX

XXA0

PA

PD

Device Erase

6

XXXX

XXAA

XXXX

XX55

XXXX

XX80

XXXX

XXAA

XXXX

XX55

XXXX

XX10

Sector Erase

6

XXXX

XXAA

XXXX

XX55

XXXX

XX80

XXXX

XXAA

XXXX

XX55

SA

XX30

Sector Erase Suspend (Note 6)

1

XXXX XXB0

Sector Erase Resume (Note 7)

1

XXXX XX30

Embedded Command Sequence

(Note 1)

Bus Cycles (Notes 2–8)

First

Second

Third

Fourth

Fifth

Sixth

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Read

1

RA

RD

Reset

1

XXXX XXF0

Autoselect Manufacturer ID (Note 4)

4

XXXX

AAXX

XXXX

55XX

XXXX

90XX

XX00

01XX

Autoselect Device ID (Note 4)

4

XXXX

AAXX

XXXX

55XX

XXXX

90XX

XX01

38XX

Byte Write

4

XXXX

AAXX

XXXX

55XX

XXXX

A0XX

PA

PDXX

Device Erase

6

XXXX

AAXX

XXXX

55XX

XXXX

80XX

XXXX

AAXX

XXXX

55XX

XXXX

10XX

Sector Erase

6

XXXX

AAXX

XXXX

55XX

XXXX

80XX

XXXX

AAXX

XXXX

55XX

SA

30XX

Sector Erase Suspend (Note 6)

1

XXXX XXB0

Sector Erase Resume (Note 7)

1

XXXX XX30